Extendion And Development Of Radius Billing Server For VoIP Production

This article especially discusses the design and analysis of RADIUS server for large-scale VoIP system. It also provides a material implementation scheme using Java programming language.The system includes RADIUS server and WEB manager system. It supports function of fax client, authenticates user's request and supports flexible account policy and statistics. This system provides the basic functions that be defined by H.323 and simple and convenient operating and management functions, so it makes good winning after entering market.The author writes this article based on the project, first he introduces the architecture, protocol's stack, functions of main modules and typical call procedure of H.323, then introcuces system design and implement, including RADIUS module architecture design, design and implement of additional functions, and administering module architecture design and implement, as well as introducing the functions of software modules. Latest, introduces the tests.Eventually, the author makes a summary and puts forward some advanced ideas for it.